ASCII stands for American Standard Code for Information Interchange, the following programs prints ASCII value for a given character and all the ASCII values from 0 to 255.

ASCII value of A is 65

ASCII value of a is 97

ASCII value of 0 is 48

C program to find ASCII value of a character

#include<stdio.h>

int main ()
{

  char ch;
  
  printf("Enter a Character to Find ASCII Value :");
  scanf ("%c", &ch);

  printf ("ASCII value of character %c: %i\n", ch, ch);

  return 0;
}
Enter a Character to Find ASCII Value :A
ASCII value of character A: 65

The above program prints ASCII value for the character that you entered as an input.

let us see the C program for ASCII codes from 0 to 255. 

#include<stdio.h>

int main(){


    int i;

    for(i=0;i<=255;i++)
    printf("ASCII value of character %c: %i\n",i,i);

    return 0;
}

 OUTPUT:

ASCII value of character  : 0

ASCII value of character ☺: 1

ASCII value of character ☻: 2

ASCII value of character ♥: 3

ASCII value of character ♦: 4

ASCII value of character ♣: 5

ASCII value of character ♠: 6

ASCII value of character : 7

ASCII value of character: 8

ASCII value of character: 9

ASCII value of character: 10

ASCII value of character ♂: 11

ASCII value of character ♀: 12

ASCII value of character: 13

ASCII value of character ♫: 14

ASCII value of character ☼: 15

ASCII value of character ►: 16

ASCII value of character ◄: 17

ASCII value of character ↕: 18

ASCII value of character ‼: 19

ASCII value of character ¶: 20

ASCII value of character §: 21

ASCII value of character ▬: 22

ASCII value of character ↨: 23

ASCII value of character ↑: 24

ASCII value of character ↓: 25

ASCII value of character →: 26

ASCII value of character ←: 27

ASCII value of character ∟: 28

ASCII value of character ↔: 29

ASCII value of character ▲: 30

ASCII value of character ▼: 31

ASCII value of character  : 32

ASCII value of character !: 33

ASCII value of character ": 34

ASCII value of character #: 35

ASCII value of character $: 36

ASCII value of character %: 37

ASCII value of character &: 38

ASCII value of character ': 39

ASCII value of character (: 40

ASCII value of character ): 41

ASCII value of character *: 42

ASCII value of character +: 43

ASCII value of character ,: 44

ASCII value of character -: 45

ASCII value of character .: 46

ASCII value of character /: 47

ASCII value of character 0: 48

ASCII value of character 1: 49

ASCII value of character 2: 50

ASCII value of character 3: 51

ASCII value of character 4: 52

ASCII value of character 5: 53

ASCII value of character 6: 54

ASCII value of character 7: 55

ASCII value of character 8: 56

ASCII value of character 9: 57

ASCII value of character :: 58

ASCII value of character ;: 59

ASCII value of character <: 60

ASCII value of character =: 61

ASCII value of character >: 62

ASCII value of character ?: 63

ASCII value of character @: 64

ASCII value of character A: 65

ASCII value of character B: 66

ASCII value of character C: 67

ASCII value of character D: 68

ASCII value of character E: 69

ASCII value of character F: 70

ASCII value of character G: 71

ASCII value of character H: 72

ASCII value of character I: 73

ASCII value of character J: 74

ASCII value of character K: 75

ASCII value of character L: 76

ASCII value of character M: 77

ASCII value of character N: 78

ASCII value of character O: 79

ASCII value of character P: 80

ASCII value of character Q: 81

ASCII value of character R: 82

ASCII value of character S: 83

ASCII value of character T: 84

ASCII value of character U: 85

ASCII value of character V: 86

ASCII value of character W: 87

ASCII value of character X: 88

ASCII value of character Y: 89

ASCII value of character Z: 90

ASCII value of character [: 91

ASCII value of character \: 92

ASCII value of character ]: 93

ASCII value of character ^: 94

ASCII value of character _: 95

ASCII value of character `: 96

ASCII value of character a: 97

ASCII value of character b: 98

ASCII value of character c: 99

ASCII value of character d: 100

ASCII value of character e: 101

ASCII value of character f: 102

ASCII value of character g: 103

ASCII value of character h: 104

ASCII value of character i: 105

ASCII value of character j: 106

ASCII value of character k: 107

ASCII value of character l: 108

ASCII value of character m: 109

ASCII value of character n: 110

ASCII value of character o: 111

ASCII value of character p: 112

ASCII value of character q: 113

ASCII value of character r: 114

ASCII value of character s: 115

ASCII value of character t: 116

ASCII value of character u: 117

ASCII value of character v: 118

ASCII value of character w: 119

ASCII value of character x: 120

ASCII value of character y: 121

ASCII value of character z: 122

ASCII value of character {: 123

ASCII value of character |: 124

ASCII value of character }: 125

ASCII value of character ~: 126

ASCII value of character ⌂: 127

ASCII value of character Ç: 128

ASCII value of character ü: 129

ASCII value of character é: 130

ASCII value of character â: 131

ASCII value of character ä: 132

ASCII value of character à: 133

ASCII value of character å: 134

ASCII value of character ç: 135

ASCII value of character ê: 136

ASCII value of character ë: 137

ASCII value of character è: 138

ASCII value of character ï: 139

ASCII value of character î: 140

ASCII value of character ì: 141

ASCII value of character Ä: 142

ASCII value of character Å: 143

ASCII value of character É: 144

ASCII value of character æ: 145

ASCII value of character Æ: 146

ASCII value of character ô: 147

ASCII value of character ö: 148

ASCII value of character ò: 149

ASCII value of character û: 150

ASCII value of character ù: 151

ASCII value of character ÿ: 152

ASCII value of character Ö: 153

ASCII value of character Ü: 154

ASCII value of character ¢: 155

ASCII value of character £: 156

ASCII value of character ¥: 157

ASCII value of character ₧: 158

ASCII value of character ƒ: 159

ASCII value of character á: 160

ASCII value of character í: 161

ASCII value of character ó: 162

ASCII value of character ú: 163

ASCII value of character ñ: 164

ASCII value of character Ñ: 165

ASCII value of character ª: 166

ASCII value of character º: 167

ASCII value of character ¿: 168

ASCII value of character ⌐: 169

ASCII value of character ¬: 170

ASCII value of character ½: 171

ASCII value of character ¼: 172

ASCII value of character ¡: 173

ASCII value of character «: 174

ASCII value of character »: 175

ASCII value of character ░: 176

ASCII value of character ▒: 177

ASCII value of character ▓: 178

ASCII value of character │: 179

ASCII value of character ┤: 180

ASCII value of character ╡: 181

ASCII value of character ╢: 182

ASCII value of character ╖: 183

ASCII value of character ╕: 184

ASCII value of character ╣: 185

ASCII value of character ║: 186

ASCII value of character ╗: 187

ASCII value of character ╝: 188

ASCII value of character ╜: 189

ASCII value of character ╛: 190

ASCII value of character ┐: 191

ASCII value of character └: 192

ASCII value of character ┴: 193

ASCII value of character ┬: 194

ASCII value of character ├: 195

ASCII value of character ─: 196

ASCII value of character ┼: 197

ASCII value of character ╞: 198

ASCII value of character ╟: 199

ASCII value of character ╚: 200

ASCII value of character ╔: 201

ASCII value of character ╩: 202

ASCII value of character ╦: 203

ASCII value of character ╠: 204

ASCII value of character ═: 205

ASCII value of character ╬: 206

ASCII value of character ╧: 207

ASCII value of character ╨: 208

ASCII value of character ╤: 209

ASCII value of character ╥: 210

ASCII value of character ╙: 211

ASCII value of character ╘: 212

ASCII value of character ╒: 213

ASCII value of character ╓: 214

ASCII value of character ╫: 215

ASCII value of character ╪: 216

ASCII value of character ┘: 217

ASCII value of character ┌: 218

ASCII value of character █: 219

ASCII value of character ▄: 220

ASCII value of character ▌: 221

ASCII value of character ▐: 222

ASCII value of character ▀: 223

ASCII value of character α: 224

ASCII value of character ß: 225

ASCII value of character Γ: 226

ASCII value of character π: 227

ASCII value of character Σ: 228

ASCII value of character σ: 229

ASCII value of character µ: 230

ASCII value of character τ: 231

ASCII value of character Φ: 232

ASCII value of character Θ: 233

ASCII value of character Ω: 234

ASCII value of character δ: 235

ASCII value of character ∞: 236

ASCII value of character φ: 237

ASCII value of character ε: 238

ASCII value of character ∩: 239

ASCII value of character ≡: 240

ASCII value of character ±: 241

ASCII value of character ≥: 242

ASCII value of character ≤: 243

ASCII value of character ⌠: 244

ASCII value of character ⌡: 245

ASCII value of character ÷: 246

ASCII value of character ≈: 247

ASCII value of character °: 248

ASCII value of character ∙: 249

ASCII value of character ·: 250

ASCII value of character √: 251

ASCII value of character ⁿ: 252

ASCII value of character ²: 253

ASCII value of character ■: 254

ASCII value of character  : 255